diff options
Diffstat (limited to 'ruby.html.markdown')
| -rw-r--r-- | ruby.html.markdown | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/ruby.html.markdown b/ruby.html.markdown index 2595d1d5..3fc2ed2d 100644 --- a/ruby.html.markdown +++ b/ruby.html.markdown @@ -23,6 +23,15 @@ contributors: ```ruby # This is a comment +=begin +This is a multi-line comment. +The beginning line must start with "=begin" +and the ending line must start with "=end". + +You can do this, or start each line in +a multi-line comment with the # character. +=end + # In Ruby, (almost) everything is an object. # This includes numbers... 3.class #=> Integer @@ -247,6 +256,14 @@ else 'else, also optional' end +# If a condition controls invokation of a single statement rather than a block of code +# you can use postfix-if notation +warnings = ['Patronimic is missing', 'Address too short'] +puts("Some warnings occurred:\n" + warnings.join("\n")) if !warnings.empty? + +# Rephrase condition if `unless` sounds better than `if` +puts("Some warnings occurred:\n" + warnings.join("\n")) unless warnings.empty? + # Loops # In Ruby, traditional `for` loops aren't very common. Instead, these # basic loops are implemented using enumerable, which hinges on `each`. @@ -402,7 +419,7 @@ def guests(&block) end # The 'call' method on the Proc is similar to calling 'yield' when a block is -# present. The arguments passed to 'call' will be forwarded to the block as arugments. +# present. The arguments passed to 'call' will be forwarded to the block as arguments. guests { |n| "You have #{n} guests." } # => "You have 4 guests." |